65519810 divided by 9 
The aim is to understand the frequency of 9 in 65519810.

Moving on to step 1:
When dividing 6 by 9, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 9

On to step 2:
When dividing 65 by 9, we get 7 with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 63 from 65, we get 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 9

Step 3:
9 can be fit into 25 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
Deduct 18 from 25 and we're left with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 9

Moving on to step 4:
71 divided by 9 is 7 with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 727.0
If we subtract 63 from 71, we get 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 9

Advancing to step 5:
If we divide 89 by 9, we get 9 and a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 7279.0
Deduct 81 from 89 and we're left with 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 9

Moving on to step 6:
The number 9 fits into 88 9 times, leaving a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 72799.0
If we subtract 81 from 88, we get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 9

Step 7:
If we divide 71 by 9, we get 7 and a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 727997.0
Subtracting 63 from 71 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 9

Going ahead to step 8:
If we divide 80 by 9, we get 8 and a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 7279978.0
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
When dividing 80 by 9, we get 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 7279978.8
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
9 can be fit into 80 8 times, resulting in a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 7279978.88
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 7279978.88, and the remainder is 0.008.